PREHEAT grill. RUB one side of bread with garlic. BRUSH garlic side of each slice lightly with olive oil, using a total of 1 tablespoon. PLACE bread, oil-side up, on grill. GRILL 1 minute or until golden on bottom side. TURN over and grill 30 seconds to 1 minute to brown second side. REMOVE from grill. When cool enough to handle, CUT into bite-size croutons. Set aside. In a large salad bowl, COMBINE tomatoes, cucumber, scallions, basil and chicken. ADD croutons. TOSS gently but well. In a cup, COMBINE remaining 1 tablespoon oil, vinegar, tomato juice, salt and pepper. STIR well. POUR over salad. TOSS well.